Nouns

(n)ethnica person who is a member of an ethnic group

Adjectives

(s)cultural, ethnic, ethnicaldenoting or deriving from or distinctive of the ways of living built up by a group of people“influenced by ethnic and cultural ties” (J.F.Kennedy), “ethnic food”
(s)heathen, heathenish, pagan, ethnicnot acknowledging the God of Christianity and Judaism and Islam